1．(2018·全国卷Ⅰ)The review says running regularly is(be) more effective at lengthening life than walking, cycling or swimming.
2．If nothing is__done(do) about the pollution, then we’ll have no place to live.
3．Email，as well as telephones, is__playing(play) an important part in daily communication now.
4．(福建卷)To my delight, I was__chosen(choose) from hundreds of applicants to attend the opening ceremony.
5．(2016·全国卷Ⅱ)Leaving the less important things until tomorrow is(be) often acceptable.
6．Either you or I am(be) going to visit the exhibition this summer.
7．Each citizen over 18 years old in our country has(have) the right to vote.
8．The writer, whose new book sells(sell) well, has been invited to attend the book signing to be held next week.
9．The medical team are(be) treating the injured at present in that hospital.
10．(2019·南京实验国际学校高一期中)Reading English papers and magazines is(be) helpful to our study of English.
